Cos(x) = 1 at 0 and 2pi 360 and -360 is the same angle as 2pi so all of the above if you start at 0 and make a complete circle (360) you will be back at point 0.
It would be 50? your adding/increaseing 44.2 centimeters to 16 centimeters because
28 miles per gallon. To find miles per gallon you do miles divided by gallons which in this case is 322/11.5=28.
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